Finding the Third Proportional to 1,638,246 and 2,564,298

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,246 : 2,564,298 = 2,564,298 : x
2. Step 2: Convert to fraction form
   1,638,246/2,564,298 = 2,564,298/x
3. Step 3: Cross multiply
   1,638,246x = 2,564,298 × 2,564,298
4. Step 4: Simplify right side
   1,638,246x = 6,575,624,232,804
5. Step 5: Solve for x
   x = 6,575,624,232,804/1,638,246
6. Step 6: Final answer
   x = 4,013,819.80