Finding the Third Proportional to 8,815,700 and 13,622,490

Step by Step Solution

1. Step 1: Write the proportion equation
   8,815,700 : 13,622,490 = 13,622,490 : x
2. Step 2: Convert to fraction form
   8,815,700/13,622,490 = 13,622,490/x
3. Step 3: Cross multiply
   8,815,700x = 13,622,490 × 13,622,490
4. Step 4: Simplify right side
   8,815,700x = 185,572,233,800,100
5. Step 5: Solve for x
   x = 185,572,233,800,100/8,815,700
6. Step 6: Final answer
   x = 21,050,198.37