Finding the Third Proportional to 30,111.75 and 64,803.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,111.75 : 64,803.38 = 64,803.38 : x
2. Step 2: Convert to fraction form
   30,111.75/64,803.38 = 64,803.38/x
3. Step 3: Cross multiply
   30,111.75x = 64,803.38 × 64,803.38
4. Step 4: Simplify right side
   30,111.75x = 4,199,477,411.39
5. Step 5: Solve for x
   x = 4,199,477,411.39/30,111.75
6. Step 6: Final answer
   x = 139,463.08