Finding the Third Proportional to 12,458,530.50 and 19,499,259

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458,530.50 : 19,499,259 = 19,499,259 : x
2. Step 2: Convert to fraction form
   12,458,530.50/19,499,259 = 19,499,259/x
3. Step 3: Cross multiply
   12,458,530.50x = 19,499,259 × 19,499,259
4. Step 4: Simplify right side
   12,458,530.50x = 380,221,101,549,081
5. Step 5: Solve for x
   x = 380,221,101,549,081/12,458,530.50
6. Step 6: Final answer
   x = 30,518,936.53