Finding the Third Proportional to 407,106 and 868,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,106 : 868,315.50 = 868,315.50 : x
2. Step 2: Convert to fraction form
   407,106/868,315.50 = 868,315.50/x
3. Step 3: Cross multiply
   407,106x = 868,315.50 × 868,315.50
4. Step 4: Simplify right side
   407,106x = 753,971,807,540.25
5. Step 5: Solve for x
   x = 753,971,807,540.25/407,106
6. Step 6: Final answer
   x = 1,852,028.24