Finding the Third Proportional to 146,053.50 and 318,411

Step by Step Solution

1. Step 1: Write the proportion equation
   146,053.50 : 318,411 = 318,411 : x
2. Step 2: Convert to fraction form
   146,053.50/318,411 = 318,411/x
3. Step 3: Cross multiply
   146,053.50x = 318,411 × 318,411
4. Step 4: Simplify right side
   146,053.50x = 101,385,564,921
5. Step 5: Solve for x
   x = 101,385,564,921/146,053.50
6. Step 6: Final answer
   x = 694,167.31