Finding the Third Proportional to 30,111.75 and 64,374.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,111.75 : 64,374.75 = 64,374.75 : x
2. Step 2: Convert to fraction form
   30,111.75/64,374.75 = 64,374.75/x
3. Step 3: Cross multiply
   30,111.75x = 64,374.75 × 64,374.75
4. Step 4: Simplify right side
   30,111.75x = 4,144,108,437.56
5. Step 5: Solve for x
   x = 4,144,108,437.56/30,111.75
6. Step 6: Final answer
   x = 137,624.30