Finding the Third Proportional to 16,490,490 and 25,678,053

Step by Step Solution

1. Step 1: Write the proportion equation
   16,490,490 : 25,678,053 = 25,678,053 : x
2. Step 2: Convert to fraction form
   16,490,490/25,678,053 = 25,678,053/x
3. Step 3: Cross multiply
   16,490,490x = 25,678,053 × 25,678,053
4. Step 4: Simplify right side
   16,490,490x = 659,362,405,870,809
5. Step 5: Solve for x
   x = 659,362,405,870,809/16,490,490
6. Step 6: Final answer
   x = 39,984,403.49