Finding the Third Proportional to 407,107 and 868,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,107 : 868,317.50 = 868,317.50 : x
2. Step 2: Convert to fraction form
   407,107/868,317.50 = 868,317.50/x
3. Step 3: Cross multiply
   407,107x = 868,317.50 × 868,317.50
4. Step 4: Simplify right side
   407,107x = 753,975,280,806.25
5. Step 5: Solve for x
   x = 753,975,280,806.25/407,107
6. Step 6: Final answer
   x = 1,852,032.22