Finding the Third Proportional to 368,357 and 553,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,357 : 553,902.50 = 553,902.50 : x
2. Step 2: Convert to fraction form
   368,357/553,902.50 = 553,902.50/x
3. Step 3: Cross multiply
   368,357x = 553,902.50 × 553,902.50
4. Step 4: Simplify right side
   368,357x = 306,807,979,506.25
5. Step 5: Solve for x
   x = 306,807,979,506.25/368,357
6. Step 6: Final answer
   x = 832,909.32