Finding the Third Proportional to 868,474 and 1,913,642

Step by Step Solution

1. Step 1: Write the proportion equation
   868,474 : 1,913,642 = 1,913,642 : x
2. Step 2: Convert to fraction form
   868,474/1,913,642 = 1,913,642/x
3. Step 3: Cross multiply
   868,474x = 1,913,642 × 1,913,642
4. Step 4: Simplify right side
   868,474x = 3,662,025,704,164
5. Step 5: Solve for x
   x = 3,662,025,704,164/868,474
6. Step 6: Final answer
   x = 4,216,621.00