Finding the Third Proportional to 520,840,143 and 1,123,458,399

Step by Step Solution

1. Step 1: Write the proportion equation
   520,840,143 : 1,123,458,399 = 1,123,458,399 : x
2. Step 2: Convert to fraction form
   520,840,143/1,123,458,399 = 1,123,458,399/x
3. Step 3: Cross multiply
   520,840,143x = 1,123,458,399 × 1,123,458,399
4. Step 4: Simplify right side
   520,840,143x = 1,262,158,774,283,643,136
5. Step 5: Solve for x
   x = 1,262,158,774,283,643,136/520,840,143
6. Step 6: Final answer
   x = 2,423,313,162.87