Finding the Third Proportional to 81,545 and 168,683.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,545 : 168,683.50 = 168,683.50 : x
2. Step 2: Convert to fraction form
   81,545/168,683.50 = 168,683.50/x
3. Step 3: Cross multiply
   81,545x = 168,683.50 × 168,683.50
4. Step 4: Simplify right side
   81,545x = 28,454,123,172.25
5. Step 5: Solve for x
   x = 28,454,123,172.25/81,545
6. Step 6: Final answer
   x = 348,937.68