Finding the Third Proportional to 421,272 and 1,007,280

Step by Step Solution

1. Step 1: Write the proportion equation
   421,272 : 1,007,280 = 1,007,280 : x
2. Step 2: Convert to fraction form
   421,272/1,007,280 = 1,007,280/x
3. Step 3: Cross multiply
   421,272x = 1,007,280 × 1,007,280
4. Step 4: Simplify right side
   421,272x = 1,014,612,998,400
5. Step 5: Solve for x
   x = 1,014,612,998,400/421,272
6. Step 6: Final answer
   x = 2,408,451.07