Finding the Third Proportional to 21,018,602.50 and 31,678,243

Step by Step Solution

1. Step 1: Write the proportion equation
   21,018,602.50 : 31,678,243 = 31,678,243 : x
2. Step 2: Convert to fraction form
   21,018,602.50/31,678,243 = 31,678,243/x
3. Step 3: Cross multiply
   21,018,602.50x = 31,678,243 × 31,678,243
4. Step 4: Simplify right side
   21,018,602.50x = 1,003,511,079,567,049
5. Step 5: Solve for x
   x = 1,003,511,079,567,049/21,018,602.50
6. Step 6: Final answer
   x = 47,743,948.70