Finding the Third Proportional to 563,945,978 and 862,131,747

Step by Step Solution

1. Step 1: Write the proportion equation
   563,945,978 : 862,131,747 = 862,131,747 : x
2. Step 2: Convert to fraction form
   563,945,978/862,131,747 = 862,131,747/x
3. Step 3: Cross multiply
   563,945,978x = 862,131,747 × 862,131,747
4. Step 4: Simplify right side
   563,945,978x = 743,271,149,185,272,064
5. Step 5: Solve for x
   x = 743,271,149,185,272,064/563,945,978
6. Step 6: Final answer
   x = 1,317,982,888.75