Finding the Third Proportional to 30,927.75 and 68,938.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,927.75 : 68,938.50 = 68,938.50 : x
2. Step 2: Convert to fraction form
   30,927.75/68,938.50 = 68,938.50/x
3. Step 3: Cross multiply
   30,927.75x = 68,938.50 × 68,938.50
4. Step 4: Simplify right side
   30,927.75x = 4,752,516,782.25
5. Step 5: Solve for x
   x = 4,752,516,782.25/30,927.75
6. Step 6: Final answer
   x = 153,665.13