Finding the Third Proportional to 1,448,418 and 2,128,248

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448,418 : 2,128,248 = 2,128,248 : x
2. Step 2: Convert to fraction form
   1,448,418/2,128,248 = 2,128,248/x
3. Step 3: Cross multiply
   1,448,418x = 2,128,248 × 2,128,248
4. Step 4: Simplify right side
   1,448,418x = 4,529,439,549,504
5. Step 5: Solve for x
   x = 4,529,439,549,504/1,448,418
6. Step 6: Final answer
   x = 3,127,163.26