Finding the Third Proportional to 2,173,942 and 4,722,478

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173,942 : 4,722,478 = 4,722,478 : x
2. Step 2: Convert to fraction form
   2,173,942/4,722,478 = 4,722,478/x
3. Step 3: Cross multiply
   2,173,942x = 4,722,478 × 4,722,478
4. Step 4: Simplify right side
   2,173,942x = 22,301,798,460,484
5. Step 5: Solve for x
   x = 22,301,798,460,484/2,173,942
6. Step 6: Final answer
   x = 10,258,690.65