Finding the Third Proportional to 284,782.50 and 626,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,782.50 : 626,404.50 = 626,404.50 : x
2. Step 2: Convert to fraction form
   284,782.50/626,404.50 = 626,404.50/x
3. Step 3: Cross multiply
   284,782.50x = 626,404.50 × 626,404.50
4. Step 4: Simplify right side
   284,782.50x = 392,382,597,620.25
5. Step 5: Solve for x
   x = 392,382,597,620.25/284,782.50
6. Step 6: Final answer
   x = 1,377,832.55