Finding the Third Proportional to 1,748,258 and 2,638,451

Step by Step Solution

1. Step 1: Write the proportion equation
   1,748,258 : 2,638,451 = 2,638,451 : x
2. Step 2: Convert to fraction form
   1,748,258/2,638,451 = 2,638,451/x
3. Step 3: Cross multiply
   1,748,258x = 2,638,451 × 2,638,451
4. Step 4: Simplify right side
   1,748,258x = 6,961,423,679,401
5. Step 5: Solve for x
   x = 6,961,423,679,401/1,748,258
6. Step 6: Final answer
   x = 3,981,920.11