Finding the Third Proportional to 556,624 and 1,218,272

Step by Step Solution

1. Step 1: Write the proportion equation
   556,624 : 1,218,272 = 1,218,272 : x
2. Step 2: Convert to fraction form
   556,624/1,218,272 = 1,218,272/x
3. Step 3: Cross multiply
   556,624x = 1,218,272 × 1,218,272
4. Step 4: Simplify right side
   556,624x = 1,484,186,665,984
5. Step 5: Solve for x
   x = 1,484,186,665,984/556,624
6. Step 6: Final answer
   x = 2,666,407.96