Finding the Third Proportional to 938,642 and 1,921,024

Step by Step Solution

1. Step 1: Write the proportion equation
   938,642 : 1,921,024 = 1,921,024 : x
2. Step 2: Convert to fraction form
   938,642/1,921,024 = 1,921,024/x
3. Step 3: Cross multiply
   938,642x = 1,921,024 × 1,921,024
4. Step 4: Simplify right side
   938,642x = 3,690,333,208,576
5. Step 5: Solve for x
   x = 3,690,333,208,576/938,642
6. Step 6: Final answer
   x = 3,931,566.25