Finding the Third Proportional to 149,429.81 and 322,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,429.81 : 322,474.50 = 322,474.50 : x
2. Step 2: Convert to fraction form
   149,429.81/322,474.50 = 322,474.50/x
3. Step 3: Cross multiply
   149,429.81x = 322,474.50 × 322,474.50
4. Step 4: Simplify right side
   149,429.81x = 103,989,803,150.25
5. Step 5: Solve for x
   x = 103,989,803,150.25/149,429.81
6. Step 6: Final answer
   x = 695,910.68