Finding the Third Proportional to 1,999,311 and 4,397,061

Step by Step Solution

1. Step 1: Write the proportion equation
   1,999,311 : 4,397,061 = 4,397,061 : x
2. Step 2: Convert to fraction form
   1,999,311/4,397,061 = 4,397,061/x
3. Step 3: Cross multiply
   1,999,311x = 4,397,061 × 4,397,061
4. Step 4: Simplify right side
   1,999,311x = 19,334,145,437,721
5. Step 5: Solve for x
   x = 19,334,145,437,721/1,999,311
6. Step 6: Final answer
   x = 9,670,404.17