Finding the Third Proportional to 29,819.59 and 64,309.69

Step by Step Solution

1. Step 1: Write the proportion equation
   29,819.59 : 64,309.69 = 64,309.69 : x
2. Step 2: Convert to fraction form
   29,819.59/64,309.69 = 64,309.69/x
3. Step 3: Cross multiply
   29,819.59x = 64,309.69 × 64,309.69
4. Step 4: Simplify right side
   29,819.59x = 4,135,736,094.76
5. Step 5: Solve for x
   x = 4,135,736,094.76/29,819.59
6. Step 6: Final answer
   x = 138,691.92