Finding the Third Proportional to 16,820,811 and 25,563,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,820,811 : 25,563,640.50 = 25,563,640.50 : x
2. Step 2: Convert to fraction form
   16,820,811/25,563,640.50 = 25,563,640.50/x
3. Step 3: Cross multiply
   16,820,811x = 25,563,640.50 × 25,563,640.50
4. Step 4: Simplify right side
   16,820,811x = 653,499,715,613,240.25
5. Step 5: Solve for x
   x = 653,499,715,613,240.25/16,820,811
6. Step 6: Final answer
   x = 38,850,666.33