Finding the Third Proportional to 90,001.75 and 116,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,001.75 : 116,139.50 = 116,139.50 : x
2. Step 2: Convert to fraction form
   90,001.75/116,139.50 = 116,139.50/x
3. Step 3: Cross multiply
   90,001.75x = 116,139.50 × 116,139.50
4. Step 4: Simplify right side
   90,001.75x = 13,488,383,460.25
5. Step 5: Solve for x
   x = 13,488,383,460.25/90,001.75
6. Step 6: Final answer
   x = 149,868.01