Finding the Third Proportional to 448,417.50 and 680,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   448,417.50 : 680,929.50 = 680,929.50 : x
2. Step 2: Convert to fraction form
   448,417.50/680,929.50 = 680,929.50/x
3. Step 3: Cross multiply
   448,417.50x = 680,929.50 × 680,929.50
4. Step 4: Simplify right side
   448,417.50x = 463,664,983,970.25
5. Step 5: Solve for x
   x = 463,664,983,970.25/448,417.50
6. Step 6: Final answer
   x = 1,034,002.87