Finding the Third Proportional to 21,018,584 and 31,678,212

Step by Step Solution

1. Step 1: Write the proportion equation
   21,018,584 : 31,678,212 = 31,678,212 : x
2. Step 2: Convert to fraction form
   21,018,584/31,678,212 = 31,678,212/x
3. Step 3: Cross multiply
   21,018,584x = 31,678,212 × 31,678,212
4. Step 4: Simplify right side
   21,018,584x = 1,003,509,115,516,944
5. Step 5: Solve for x
   x = 1,003,509,115,516,944/21,018,584
6. Step 6: Final answer
   x = 47,743,897.28