Finding the Third Proportional to 89,854,060 and 128,403,788

Step by Step Solution

1. Step 1: Write the proportion equation
   89,854,060 : 128,403,788 = 128,403,788 : x
2. Step 2: Convert to fraction form
   89,854,060/128,403,788 = 128,403,788/x
3. Step 3: Cross multiply
   89,854,060x = 128,403,788 × 128,403,788
4. Step 4: Simplify right side
   89,854,060x = 16,487,532,772,748,944
5. Step 5: Solve for x
   x = 16,487,532,772,748,944/89,854,060
6. Step 6: Final answer
   x = 183,492,351.63