Finding the Third Proportional to 42,498 and 99,258.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,498 : 99,258.75 = 99,258.75 : x
2. Step 2: Convert to fraction form
   42,498/99,258.75 = 99,258.75/x
3. Step 3: Cross multiply
   42,498x = 99,258.75 × 99,258.75
4. Step 4: Simplify right side
   42,498x = 9,852,299,451.56
5. Step 5: Solve for x
   x = 9,852,299,451.56/42,498
6. Step 6: Final answer
   x = 231,829.72