Finding the Third Proportional to 1,447,640 and 2,129,356

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,640 : 2,129,356 = 2,129,356 : x
2. Step 2: Convert to fraction form
   1,447,640/2,129,356 = 2,129,356/x
3. Step 3: Cross multiply
   1,447,640x = 2,129,356 × 2,129,356
4. Step 4: Simplify right side
   1,447,640x = 4,534,156,974,736
5. Step 5: Solve for x
   x = 4,534,156,974,736/1,447,640
6. Step 6: Final answer
   x = 3,132,102.58