Finding the Third Proportional to 147,025.50 and 318,944.25

Step by Step Solution

1. Step 1: Write the proportion equation
   147,025.50 : 318,944.25 = 318,944.25 : x
2. Step 2: Convert to fraction form
   147,025.50/318,944.25 = 318,944.25/x
3. Step 3: Cross multiply
   147,025.50x = 318,944.25 × 318,944.25
4. Step 4: Simplify right side
   147,025.50x = 101,725,434,608.06
5. Step 5: Solve for x
   x = 101,725,434,608.06/147,025.50
6. Step 6: Final answer
   x = 691,889.74