Finding the Third Proportional to 21,692,640 and 28,789,348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,692,640 : 28,789,348.50 = 28,789,348.50 : x
2. Step 2: Convert to fraction form
   21,692,640/28,789,348.50 = 28,789,348.50/x
3. Step 3: Cross multiply
   21,692,640x = 28,789,348.50 × 28,789,348.50
4. Step 4: Simplify right side
   21,692,640x = 828,826,587,054,452.25
5. Step 5: Solve for x
   x = 828,826,587,054,452.25/21,692,640
6. Step 6: Final answer
   x = 38,207,732.53