Finding the Third Proportional to 871,272 and 1,387,296

Step by Step Solution

1. Step 1: Write the proportion equation
   871,272 : 1,387,296 = 1,387,296 : x
2. Step 2: Convert to fraction form
   871,272/1,387,296 = 1,387,296/x
3. Step 3: Cross multiply
   871,272x = 1,387,296 × 1,387,296
4. Step 4: Simplify right side
   871,272x = 1,924,590,191,616
5. Step 5: Solve for x
   x = 1,924,590,191,616/871,272
6. Step 6: Final answer
   x = 2,208,943.01