Finding the Third Proportional to 561,219 and 855,838.88

Step by Step Solution

1. Step 1: Write the proportion equation
   561,219 : 855,838.88 = 855,838.88 : x
2. Step 2: Convert to fraction form
   561,219/855,838.88 = 855,838.88/x
3. Step 3: Cross multiply
   561,219x = 855,838.88 × 855,838.88
4. Step 4: Simplify right side
   561,219x = 732,460,179,961.27
5. Step 5: Solve for x
   x = 732,460,179,961.27/561,219
6. Step 6: Final answer
   x = 1,305,123.63