Finding the Third Proportional to 2,920,639 and 4,356,654

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920,639 : 4,356,654 = 4,356,654 : x
2. Step 2: Convert to fraction form
   2,920,639/4,356,654 = 4,356,654/x
3. Step 3: Cross multiply
   2,920,639x = 4,356,654 × 4,356,654
4. Step 4: Simplify right side
   2,920,639x = 18,980,434,075,716
5. Step 5: Solve for x
   x = 18,980,434,075,716/2,920,639
6. Step 6: Final answer
   x = 6,498,726.50