Finding the Third Proportional to 147,358.50 and 321,702

Step by Step Solution

1. Step 1: Write the proportion equation
   147,358.50 : 321,702 = 321,702 : x
2. Step 2: Convert to fraction form
   147,358.50/321,702 = 321,702/x
3. Step 3: Cross multiply
   147,358.50x = 321,702 × 321,702
4. Step 4: Simplify right side
   147,358.50x = 103,492,176,804
5. Step 5: Solve for x
   x = 103,492,176,804/147,358.50
6. Step 6: Final answer
   x = 702,315.62