Finding the Third Proportional to 578,793 and 896,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   578,793 : 896,107.50 = 896,107.50 : x
2. Step 2: Convert to fraction form
   578,793/896,107.50 = 896,107.50/x
3. Step 3: Cross multiply
   578,793x = 896,107.50 × 896,107.50
4. Step 4: Simplify right side
   578,793x = 803,008,651,556.25
5. Step 5: Solve for x
   x = 803,008,651,556.25/578,793
6. Step 6: Final answer
   x = 1,387,384.87