Finding the Third Proportional to 557,839,253 and 1,216,120,963

Step by Step Solution

1. Step 1: Write the proportion equation
   557,839,253 : 1,216,120,963 = 1,216,120,963 : x
2. Step 2: Convert to fraction form
   557,839,253/1,216,120,963 = 1,216,120,963/x
3. Step 3: Cross multiply
   557,839,253x = 1,216,120,963 × 1,216,120,963
4. Step 4: Simplify right side
   557,839,253x = 1,478,950,196,648,047,360
5. Step 5: Solve for x
   x = 1,478,950,196,648,047,360/557,839,253
6. Step 6: Final answer
   x = 2,651,212,134.49