Finding the Third Proportional to 642,294 and 844,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   642,294 : 844,789.50 = 844,789.50 : x
2. Step 2: Convert to fraction form
   642,294/844,789.50 = 844,789.50/x
3. Step 3: Cross multiply
   642,294x = 844,789.50 × 844,789.50
4. Step 4: Simplify right side
   642,294x = 713,669,299,310.25
5. Step 5: Solve for x
   x = 713,669,299,310.25/642,294
6. Step 6: Final answer
   x = 1,111,125.59