Finding the Third Proportional to 72,178,512 and 111,932,784

Step by Step Solution

1. Step 1: Write the proportion equation
   72,178,512 : 111,932,784 = 111,932,784 : x
2. Step 2: Convert to fraction form
   72,178,512/111,932,784 = 111,932,784/x
3. Step 3: Cross multiply
   72,178,512x = 111,932,784 × 111,932,784
4. Step 4: Simplify right side
   72,178,512x = 12,528,948,133,990,656
5. Step 5: Solve for x
   x = 12,528,948,133,990,656/72,178,512
6. Step 6: Final answer
   x = 173,582,798.91