Finding the Third Proportional to 61,289,374,515.75 and 86,271,335,300

Step by Step Solution

1. Step 1: Write the proportion equation
   61,289,374,515.75 : 86,271,335,300 = 86,271,335,300 : x
2. Step 2: Convert to fraction form
   61,289,374,515.75/86,271,335,300 = 86,271,335,300/x
3. Step 3: Cross multiply
   61,289,374,515.75x = 86,271,335,300 × 86,271,335,300
4. Step 4: Simplify right side
   61,289,374,515.75x = 7,442,743,294,445,025,755,136
5. Step 5: Solve for x
   x = 7,442,743,294,445,025,755,136/61,289,374,515.75
6. Step 6: Final answer
   x = 121,436,111,124.49