Finding the Third Proportional to 402,783,128 and 867,543,096

Step by Step Solution

1. Step 1: Write the proportion equation
   402,783,128 : 867,543,096 = 867,543,096 : x
2. Step 2: Convert to fraction form
   402,783,128/867,543,096 = 867,543,096/x
3. Step 3: Cross multiply
   402,783,128x = 867,543,096 × 867,543,096
4. Step 4: Simplify right side
   402,783,128x = 752,631,023,417,265,152
5. Step 5: Solve for x
   x = 752,631,023,417,265,152/402,783,128
6. Step 6: Final answer
   x = 1,868,576,340.71