Finding the Third Proportional to 2,158,146 and 4,727,448

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,146 : 4,727,448 = 4,727,448 : x
2. Step 2: Convert to fraction form
   2,158,146/4,727,448 = 4,727,448/x
3. Step 3: Cross multiply
   2,158,146x = 4,727,448 × 4,727,448
4. Step 4: Simplify right side
   2,158,146x = 22,348,764,592,704
5. Step 5: Solve for x
   x = 22,348,764,592,704/2,158,146
6. Step 6: Final answer
   x = 10,355,538.78