Finding the Third Proportional to 21,018,594 and 31,678,230

Step by Step Solution

1. Step 1: Write the proportion equation
   21,018,594 : 31,678,230 = 31,678,230 : x
2. Step 2: Convert to fraction form
   21,018,594/31,678,230 = 31,678,230/x
3. Step 3: Cross multiply
   21,018,594x = 31,678,230 × 31,678,230
4. Step 4: Simplify right side
   21,018,594x = 1,003,510,255,932,900
5. Step 5: Solve for x
   x = 1,003,510,255,932,900/21,018,594
6. Step 6: Final answer
   x = 47,743,928.82