Finding the Third Proportional to 149,158.50 and 216,693

Step by Step Solution

1. Step 1: Write the proportion equation
   149,158.50 : 216,693 = 216,693 : x
2. Step 2: Convert to fraction form
   149,158.50/216,693 = 216,693/x
3. Step 3: Cross multiply
   149,158.50x = 216,693 × 216,693
4. Step 4: Simplify right side
   149,158.50x = 46,955,856,249
5. Step 5: Solve for x
   x = 46,955,856,249/149,158.50
6. Step 6: Final answer
   x = 314,805.10