Finding the Third Proportional to 1,399,925 and 2,171,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,925 : 2,171,816 = 2,171,816 : x
2. Step 2: Convert to fraction form
   1,399,925/2,171,816 = 2,171,816/x
3. Step 3: Cross multiply
   1,399,925x = 2,171,816 × 2,171,816
4. Step 4: Simplify right side
   1,399,925x = 4,716,784,737,856
5. Step 5: Solve for x
   x = 4,716,784,737,856/1,399,925
6. Step 6: Final answer
   x = 3,369,312.45