Finding the Third Proportional to 56,556,391.50 and 86,478,120

Step by Step Solution

1. Step 1: Write the proportion equation
   56,556,391.50 : 86,478,120 = 86,478,120 : x
2. Step 2: Convert to fraction form
   56,556,391.50/86,478,120 = 86,478,120/x
3. Step 3: Cross multiply
   56,556,391.50x = 86,478,120 × 86,478,120
4. Step 4: Simplify right side
   56,556,391.50x = 7,478,465,238,734,400
5. Step 5: Solve for x
   x = 7,478,465,238,734,400/56,556,391.50
6. Step 6: Final answer
   x = 132,230,240.30