Finding the Third Proportional to 1,448,331 and 2,128,158

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448,331 : 2,128,158 = 2,128,158 : x
2. Step 2: Convert to fraction form
   1,448,331/2,128,158 = 2,128,158/x
3. Step 3: Cross multiply
   1,448,331x = 2,128,158 × 2,128,158
4. Step 4: Simplify right side
   1,448,331x = 4,529,056,472,964
5. Step 5: Solve for x
   x = 4,529,056,472,964/1,448,331
6. Step 6: Final answer
   x = 3,127,086.61