Finding the Third Proportional to 515,069 and 757,188

Step by Step Solution

1. Step 1: Write the proportion equation
   515,069 : 757,188 = 757,188 : x
2. Step 2: Convert to fraction form
   515,069/757,188 = 757,188/x
3. Step 3: Cross multiply
   515,069x = 757,188 × 757,188
4. Step 4: Simplify right side
   515,069x = 573,333,667,344
5. Step 5: Solve for x
   x = 573,333,667,344/515,069
6. Step 6: Final answer
   x = 1,113,120.12