Finding the Third Proportional to 162,388.50 and 243,339

Step by Step Solution

1. Step 1: Write the proportion equation
   162,388.50 : 243,339 = 243,339 : x
2. Step 2: Convert to fraction form
   162,388.50/243,339 = 243,339/x
3. Step 3: Cross multiply
   162,388.50x = 243,339 × 243,339
4. Step 4: Simplify right side
   162,388.50x = 59,213,868,921
5. Step 5: Solve for x
   x = 59,213,868,921/162,388.50
6. Step 6: Final answer
   x = 364,643.24