Finding the Third Proportional to 865,172 and 1,157,296

Step by Step Solution

1. Step 1: Write the proportion equation
   865,172 : 1,157,296 = 1,157,296 : x
2. Step 2: Convert to fraction form
   865,172/1,157,296 = 1,157,296/x
3. Step 3: Cross multiply
   865,172x = 1,157,296 × 1,157,296
4. Step 4: Simplify right side
   865,172x = 1,339,334,031,616
5. Step 5: Solve for x
   x = 1,339,334,031,616/865,172
6. Step 6: Final answer
   x = 1,548,055.22