Finding the Third Proportional to 279,079.50 and 611,352

Step by Step Solution

1. Step 1: Write the proportion equation
   279,079.50 : 611,352 = 611,352 : x
2. Step 2: Convert to fraction form
   279,079.50/611,352 = 611,352/x
3. Step 3: Cross multiply
   279,079.50x = 611,352 × 611,352
4. Step 4: Simplify right side
   279,079.50x = 373,751,267,904
5. Step 5: Solve for x
   x = 373,751,267,904/279,079.50
6. Step 6: Final answer
   x = 1,339,228.67