Finding the Third Proportional to 89,854,061 and 128,403,790

Step by Step Solution

1. Step 1: Write the proportion equation
   89,854,061 : 128,403,790 = 128,403,790 : x
2. Step 2: Convert to fraction form
   89,854,061/128,403,790 = 128,403,790/x
3. Step 3: Cross multiply
   89,854,061x = 128,403,790 × 128,403,790
4. Step 4: Simplify right side
   89,854,061x = 16,487,533,286,364,100
5. Step 5: Solve for x
   x = 16,487,533,286,364,100/89,854,061
6. Step 6: Final answer
   x = 183,492,355.30