Finding the Third Proportional to 877,280 and 1,913,212

Step by Step Solution

1. Step 1: Write the proportion equation
   877,280 : 1,913,212 = 1,913,212 : x
2. Step 2: Convert to fraction form
   877,280/1,913,212 = 1,913,212/x
3. Step 3: Cross multiply
   877,280x = 1,913,212 × 1,913,212
4. Step 4: Simplify right side
   877,280x = 3,660,380,156,944
5. Step 5: Solve for x
   x = 3,660,380,156,944/877,280
6. Step 6: Final answer
   x = 4,172,419.47