Finding the Third Proportional to 89,854,074 and 128,403,810

Step by Step Solution

1. Step 1: Write the proportion equation
   89,854,074 : 128,403,810 = 128,403,810 : x
2. Step 2: Convert to fraction form
   89,854,074/128,403,810 = 128,403,810/x
3. Step 3: Cross multiply
   89,854,074x = 128,403,810 × 128,403,810
4. Step 4: Simplify right side
   89,854,074x = 16,487,538,422,516,100
5. Step 5: Solve for x
   x = 16,487,538,422,516,100/89,854,074
6. Step 6: Final answer
   x = 183,492,385.92