Finding the Third Proportional to 148,610.50 and 321,461

Step by Step Solution

1. Step 1: Write the proportion equation
   148,610.50 : 321,461 = 321,461 : x
2. Step 2: Convert to fraction form
   148,610.50/321,461 = 321,461/x
3. Step 3: Cross multiply
   148,610.50x = 321,461 × 321,461
4. Step 4: Simplify right side
   148,610.50x = 103,337,174,521
5. Step 5: Solve for x
   x = 103,337,174,521/148,610.50
6. Step 6: Final answer
   x = 695,355.81