Finding the Third Proportional to 868,485 and 1,913,664

Step by Step Solution

1. Step 1: Write the proportion equation
   868,485 : 1,913,664 = 1,913,664 : x
2. Step 2: Convert to fraction form
   868,485/1,913,664 = 1,913,664/x
3. Step 3: Cross multiply
   868,485x = 1,913,664 × 1,913,664
4. Step 4: Simplify right side
   868,485x = 3,662,109,904,896
5. Step 5: Solve for x
   x = 3,662,109,904,896/868,485
6. Step 6: Final answer
   x = 4,216,664.54