Finding the Third Proportional to 1,248,294 and 2,689,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,248,294 : 2,689,420 = 2,689,420 : x
2. Step 2: Convert to fraction form
   1,248,294/2,689,420 = 2,689,420/x
3. Step 3: Cross multiply
   1,248,294x = 2,689,420 × 2,689,420
4. Step 4: Simplify right side
   1,248,294x = 7,232,979,936,400
5. Step 5: Solve for x
   x = 7,232,979,936,400/1,248,294
6. Step 6: Final answer
   x = 5,794,292.00