Finding the Third Proportional to 626,654 and 1,286,490

Step by Step Solution

1. Step 1: Write the proportion equation
   626,654 : 1,286,490 = 1,286,490 : x
2. Step 2: Convert to fraction form
   626,654/1,286,490 = 1,286,490/x
3. Step 3: Cross multiply
   626,654x = 1,286,490 × 1,286,490
4. Step 4: Simplify right side
   626,654x = 1,655,056,520,100
5. Step 5: Solve for x
   x = 1,655,056,520,100/626,654
6. Step 6: Final answer
   x = 2,641,101.02