Finding the Third Proportional to 556,711 and 1,219,820

Step by Step Solution

1. Step 1: Write the proportion equation
   556,711 : 1,219,820 = 1,219,820 : x
2. Step 2: Convert to fraction form
   556,711/1,219,820 = 1,219,820/x
3. Step 3: Cross multiply
   556,711x = 1,219,820 × 1,219,820
4. Step 4: Simplify right side
   556,711x = 1,487,960,832,400
5. Step 5: Solve for x
   x = 1,487,960,832,400/556,711
6. Step 6: Final answer
   x = 2,672,770.67