Finding the Third Proportional to 148,611.25 and 321,462

Step by Step Solution

1. Step 1: Write the proportion equation
   148,611.25 : 321,462 = 321,462 : x
2. Step 2: Convert to fraction form
   148,611.25/321,462 = 321,462/x
3. Step 3: Cross multiply
   148,611.25x = 321,462 × 321,462
4. Step 4: Simplify right side
   148,611.25x = 103,337,817,444
5. Step 5: Solve for x
   x = 103,337,817,444/148,611.25
6. Step 6: Final answer
   x = 695,356.63