Finding the Third Proportional to 365,107.50 and 786,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   365,107.50 : 786,388.50 = 786,388.50 : x
2. Step 2: Convert to fraction form
   365,107.50/786,388.50 = 786,388.50/x
3. Step 3: Cross multiply
   365,107.50x = 786,388.50 × 786,388.50
4. Step 4: Simplify right side
   365,107.50x = 618,406,872,932.25
5. Step 5: Solve for x
   x = 618,406,872,932.25/365,107.50
6. Step 6: Final answer
   x = 1,693,766.56