Finding the Third Proportional to 868,500 and 1,913,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   868,500 : 1,913,689.50 = 1,913,689.50 : x
2. Step 2: Convert to fraction form
   868,500/1,913,689.50 = 1,913,689.50/x
3. Step 3: Cross multiply
   868,500x = 1,913,689.50 × 1,913,689.50
4. Step 4: Simplify right side
   868,500x = 3,662,207,502,410.25
5. Step 5: Solve for x
   x = 3,662,207,502,410.25/868,500
6. Step 6: Final answer
   x = 4,216,704.09