Finding the Third Proportional to 76,561,155 and 168,002,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,561,155 : 168,002,617.50 = 168,002,617.50 : x
2. Step 2: Convert to fraction form
   76,561,155/168,002,617.50 = 168,002,617.50/x
3. Step 3: Cross multiply
   76,561,155x = 168,002,617.50 × 168,002,617.50
4. Step 4: Simplify right side
   76,561,155x = 28,224,879,486,851,308
5. Step 5: Solve for x
   x = 28,224,879,486,851,308/76,561,155
6. Step 6: Final answer
   x = 368,657,963.52