Finding the Third Proportional to 511,111.50 and 1,120,638

Step by Step Solution

1. Step 1: Write the proportion equation
   511,111.50 : 1,120,638 = 1,120,638 : x
2. Step 2: Convert to fraction form
   511,111.50/1,120,638 = 1,120,638/x
3. Step 3: Cross multiply
   511,111.50x = 1,120,638 × 1,120,638
4. Step 4: Simplify right side
   511,111.50x = 1,255,829,527,044
5. Step 5: Solve for x
   x = 1,255,829,527,044/511,111.50
6. Step 6: Final answer
   x = 2,457,055.90