Finding the Third Proportional to 39,706.88 and 87,189.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,706.88 : 87,189.75 = 87,189.75 : x
2. Step 2: Convert to fraction form
   39,706.88/87,189.75 = 87,189.75/x
3. Step 3: Cross multiply
   39,706.88x = 87,189.75 × 87,189.75
4. Step 4: Simplify right side
   39,706.88x = 7,602,052,505.06
5. Step 5: Solve for x
   x = 7,602,052,505.06/39,706.88
6. Step 6: Final answer
   x = 191,454.31