Finding the Third Proportional to 381,460,342 and 823,902,978

Step by Step Solution

1. Step 1: Write the proportion equation
   381,460,342 : 823,902,978 = 823,902,978 : x
2. Step 2: Convert to fraction form
   381,460,342/823,902,978 = 823,902,978/x
3. Step 3: Cross multiply
   381,460,342x = 823,902,978 × 823,902,978
4. Step 4: Simplify right side
   381,460,342x = 678,816,117,157,268,480
5. Step 5: Solve for x
   x = 678,816,117,157,268,480/381,460,342
6. Step 6: Final answer
   x = 1,779,519,500.24