Finding the Third Proportional to 39,880,734 and 86,567,820

Step by Step Solution

1. Step 1: Write the proportion equation
   39,880,734 : 86,567,820 = 86,567,820 : x
2. Step 2: Convert to fraction form
   39,880,734/86,567,820 = 86,567,820/x
3. Step 3: Cross multiply
   39,880,734x = 86,567,820 × 86,567,820
4. Step 4: Simplify right side
   39,880,734x = 7,493,987,459,552,400
5. Step 5: Solve for x
   x = 7,493,987,459,552,400/39,880,734
6. Step 6: Final answer
   x = 187,909,968.25