Finding the Third Proportional to 21,085,142 and 31,852,366

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085,142 : 31,852,366 = 31,852,366 : x
2. Step 2: Convert to fraction form
   21,085,142/31,852,366 = 31,852,366/x
3. Step 3: Cross multiply
   21,085,142x = 31,852,366 × 31,852,366
4. Step 4: Simplify right side
   21,085,142x = 1,014,573,219,797,956
5. Step 5: Solve for x
   x = 1,014,573,219,797,956/21,085,142
6. Step 6: Final answer
   x = 48,117,922.08