Finding the Third Proportional to 89,580,816 and 196,517,664

Step by Step Solution

1. Step 1: Write the proportion equation
   89,580,816 : 196,517,664 = 196,517,664 : x
2. Step 2: Convert to fraction form
   89,580,816/196,517,664 = 196,517,664/x
3. Step 3: Cross multiply
   89,580,816x = 196,517,664 × 196,517,664
4. Step 4: Simplify right side
   89,580,816x = 38,619,192,264,016,896
5. Step 5: Solve for x
   x = 38,619,192,264,016,896/89,580,816
6. Step 6: Final answer
   x = 431,110,074.55