Finding the Third Proportional to 21,678,975 and 31,919,573

Step by Step Solution

1. Step 1: Write the proportion equation
   21,678,975 : 31,919,573 = 31,919,573 : x
2. Step 2: Convert to fraction form
   21,678,975/31,919,573 = 31,919,573/x
3. Step 3: Cross multiply
   21,678,975x = 31,919,573 × 31,919,573
4. Step 4: Simplify right side
   21,678,975x = 1,018,859,140,502,329
5. Step 5: Solve for x
   x = 1,018,859,140,502,329/21,678,975
6. Step 6: Final answer
   x = 46,997,569.79