Finding the Third Proportional to 938,634 and 1,921,008

Step by Step Solution

1. Step 1: Write the proportion equation
   938,634 : 1,921,008 = 1,921,008 : x
2. Step 2: Convert to fraction form
   938,634/1,921,008 = 1,921,008/x
3. Step 3: Cross multiply
   938,634x = 1,921,008 × 1,921,008
4. Step 4: Simplify right side
   938,634x = 3,690,271,736,064
5. Step 5: Solve for x
   x = 3,690,271,736,064/938,634
6. Step 6: Final answer
   x = 3,931,534.27