Finding the Third Proportional to 42,432 and 99,078

Step by Step Solution

1. Step 1: Write the proportion equation
   42,432 : 99,078 = 99,078 : x
2. Step 2: Convert to fraction form
   42,432/99,078 = 99,078/x
3. Step 3: Cross multiply
   42,432x = 99,078 × 99,078
4. Step 4: Simplify right side
   42,432x = 9,816,450,084
5. Step 5: Solve for x
   x = 9,816,450,084/42,432
6. Step 6: Final answer
   x = 231,345.45