Finding the Third Proportional to 29,488.78 and 64,161.56

Step by Step Solution

1. Step 1: Write the proportion equation
   29,488.78 : 64,161.56 = 64,161.56 : x
2. Step 2: Convert to fraction form
   29,488.78/64,161.56 = 64,161.56/x
3. Step 3: Cross multiply
   29,488.78x = 64,161.56 × 64,161.56
4. Step 4: Simplify right side
   29,488.78x = 4,116,706,102.44
5. Step 5: Solve for x
   x = 4,116,706,102.44/29,488.78
6. Step 6: Final answer
   x = 139,602.45