Finding the Third Proportional to 16,399,386 and 25,458,590.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,399,386 : 25,458,590.25 = 25,458,590.25 : x
2. Step 2: Convert to fraction form
   16,399,386/25,458,590.25 = 25,458,590.25/x
3. Step 3: Cross multiply
   16,399,386x = 25,458,590.25 × 25,458,590.25
4. Step 4: Simplify right side
   16,399,386x = 648,139,817,517,395
5. Step 5: Solve for x
   x = 648,139,817,517,395/16,399,386
6. Step 6: Final answer
   x = 39,522,200.25