Finding the Third Proportional to 1,212,172 and 2,549,624

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,172 : 2,549,624 = 2,549,624 : x
2. Step 2: Convert to fraction form
   1,212,172/2,549,624 = 2,549,624/x
3. Step 3: Cross multiply
   1,212,172x = 2,549,624 × 2,549,624
4. Step 4: Simplify right side
   1,212,172x = 6,500,582,541,376
5. Step 5: Solve for x
   x = 6,500,582,541,376/1,212,172
6. Step 6: Final answer
   x = 5,362,755.90