Finding the Third Proportional to 402,783,154 and 867,543,144

Step by Step Solution

1. Step 1: Write the proportion equation
   402,783,154 : 867,543,144 = 867,543,144 : x
2. Step 2: Convert to fraction form
   402,783,154/867,543,144 = 867,543,144/x
3. Step 3: Cross multiply
   402,783,154x = 867,543,144 × 867,543,144
4. Step 4: Simplify right side
   402,783,154x = 752,631,106,701,404,672
5. Step 5: Solve for x
   x = 752,631,106,701,404,672/402,783,154
6. Step 6: Final answer
   x = 1,868,576,426.86