Finding the Third Proportional to 18,399,492 and 37,978,992

Step by Step Solution

1. Step 1: Write the proportion equation
   18,399,492 : 37,978,992 = 37,978,992 : x
2. Step 2: Convert to fraction form
   18,399,492/37,978,992 = 37,978,992/x
3. Step 3: Cross multiply
   18,399,492x = 37,978,992 × 37,978,992
4. Step 4: Simplify right side
   18,399,492x = 1,442,403,833,336,064
5. Step 5: Solve for x
   x = 1,442,403,833,336,064/18,399,492
6. Step 6: Final answer
   x = 78,393,677.03