Finding the Third Proportional to 29,419.88 and 64,778.06

Step by Step Solution

1. Step 1: Write the proportion equation
   29,419.88 : 64,778.06 = 64,778.06 : x
2. Step 2: Convert to fraction form
   29,419.88/64,778.06 = 64,778.06/x
3. Step 3: Cross multiply
   29,419.88x = 64,778.06 × 64,778.06
4. Step 4: Simplify right side
   29,419.88x = 4,196,197,381.25
5. Step 5: Solve for x
   x = 4,196,197,381.25/29,419.88
6. Step 6: Final answer
   x = 142,631.38