Finding the Third Proportional to 58,648.50 and 90,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,648.50 : 90,868.50 = 90,868.50 : x
2. Step 2: Convert to fraction form
   58,648.50/90,868.50 = 90,868.50/x
3. Step 3: Cross multiply
   58,648.50x = 90,868.50 × 90,868.50
4. Step 4: Simplify right side
   58,648.50x = 8,257,084,292.25
5. Step 5: Solve for x
   x = 8,257,084,292.25/58,648.50
6. Step 6: Final answer
   x = 140,789.35