Finding the Third Proportional to 42,909.75 and 99,662.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,909.75 : 99,662.06 = 99,662.06 : x
2. Step 2: Convert to fraction form
   42,909.75/99,662.06 = 99,662.06/x
3. Step 3: Cross multiply
   42,909.75x = 99,662.06 × 99,662.06
4. Step 4: Simplify right side
   42,909.75x = 9,932,526,701.75
5. Step 5: Solve for x
   x = 9,932,526,701.75/42,909.75
6. Step 6: Final answer
   x = 231,474.82