Finding the Third Proportional to 82,158.50 and 168,209

Step by Step Solution

1. Step 1: Write the proportion equation
   82,158.50 : 168,209 = 168,209 : x
2. Step 2: Convert to fraction form
   82,158.50/168,209 = 168,209/x
3. Step 3: Cross multiply
   82,158.50x = 168,209 × 168,209
4. Step 4: Simplify right side
   82,158.50x = 28,294,267,681
5. Step 5: Solve for x
   x = 28,294,267,681/82,158.50
6. Step 6: Final answer
   x = 344,386.37