Finding the Third Proportional to 555,553.50 and 786,620

Step by Step Solution

1. Step 1: Write the proportion equation
   555,553.50 : 786,620 = 786,620 : x
2. Step 2: Convert to fraction form
   555,553.50/786,620 = 786,620/x
3. Step 3: Cross multiply
   555,553.50x = 786,620 × 786,620
4. Step 4: Simplify right side
   555,553.50x = 618,771,024,400
5. Step 5: Solve for x
   x = 618,771,024,400/555,553.50
6. Step 6: Final answer
   x = 1,113,791.96