Finding the Third Proportional to 59,549,196 and 128,991,264

Step by Step Solution

1. Step 1: Write the proportion equation
   59,549,196 : 128,991,264 = 128,991,264 : x
2. Step 2: Convert to fraction form
   59,549,196/128,991,264 = 128,991,264/x
3. Step 3: Cross multiply
   59,549,196x = 128,991,264 × 128,991,264
4. Step 4: Simplify right side
   59,549,196x = 16,638,746,188,317,696
5. Step 5: Solve for x
   x = 16,638,746,188,317,696/59,549,196
6. Step 6: Final answer
   x = 279,411,768.86