Finding the Third Proportional to 402,783,308 and 867,543,456

Step by Step Solution

1. Step 1: Write the proportion equation
   402,783,308 : 867,543,456 = 867,543,456 : x
2. Step 2: Convert to fraction form
   402,783,308/867,543,456 = 867,543,456/x
3. Step 3: Cross multiply
   402,783,308x = 867,543,456 × 867,543,456
4. Step 4: Simplify right side
   402,783,308x = 752,631,648,048,423,936
5. Step 5: Solve for x
   x = 752,631,648,048,423,936/402,783,308
6. Step 6: Final answer
   x = 1,868,577,056.45