Finding the Third Proportional to 21,692,636 and 28,789,343

Step by Step Solution

1. Step 1: Write the proportion equation
   21,692,636 : 28,789,343 = 28,789,343 : x
2. Step 2: Convert to fraction form
   21,692,636/28,789,343 = 28,789,343/x
3. Step 3: Cross multiply
   21,692,636x = 28,789,343 × 28,789,343
4. Step 4: Simplify right side
   21,692,636x = 828,826,270,371,649
5. Step 5: Solve for x
   x = 828,826,270,371,649/21,692,636
6. Step 6: Final answer
   x = 38,207,724.98