Finding the Third Proportional to 42,207.75 and 99,633.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,207.75 : 99,633.80 = 99,633.80 : x
2. Step 2: Convert to fraction form
   42,207.75/99,633.80 = 99,633.80/x
3. Step 3: Cross multiply
   42,207.75x = 99,633.80 × 99,633.80
4. Step 4: Simplify right side
   42,207.75x = 9,926,893,479.73
5. Step 5: Solve for x
   x = 9,926,893,479.73/42,207.75
6. Step 6: Final answer
   x = 235,191.25