Finding the Third Proportional to 938,648 and 1,921,032

Step by Step Solution

1. Step 1: Write the proportion equation
   938,648 : 1,921,032 = 1,921,032 : x
2. Step 2: Convert to fraction form
   938,648/1,921,032 = 1,921,032/x
3. Step 3: Cross multiply
   938,648x = 1,921,032 × 1,921,032
4. Step 4: Simplify right side
   938,648x = 3,690,363,945,024
5. Step 5: Solve for x
   x = 3,690,363,945,024/938,648
6. Step 6: Final answer
   x = 3,931,573.86