Finding the Third Proportional to 42,707.25 and 99,781.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,707.25 : 99,781.88 = 99,781.88 : x
2. Step 2: Convert to fraction form
   42,707.25/99,781.88 = 99,781.88/x
3. Step 3: Cross multiply
   42,707.25x = 99,781.88 × 99,781.88
4. Step 4: Simplify right side
   42,707.25x = 9,956,422,578.52
5. Step 5: Solve for x
   x = 9,956,422,578.52/42,707.25
6. Step 6: Final answer
   x = 233,131.91