Finding the Third Proportional to 58,621.50 and 90,828

Step by Step Solution

1. Step 1: Write the proportion equation
   58,621.50 : 90,828 = 90,828 : x
2. Step 2: Convert to fraction form
   58,621.50/90,828 = 90,828/x
3. Step 3: Cross multiply
   58,621.50x = 90,828 × 90,828
4. Step 4: Simplify right side
   58,621.50x = 8,249,725,584
5. Step 5: Solve for x
   x = 8,249,725,584/58,621.50
6. Step 6: Final answer
   x = 140,728.67