Finding the Third Proportional to 30,640.50 and 48,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,640.50 : 48,784.50 = 48,784.50 : x
2. Step 2: Convert to fraction form
   30,640.50/48,784.50 = 48,784.50/x
3. Step 3: Cross multiply
   30,640.50x = 48,784.50 × 48,784.50
4. Step 4: Simplify right side
   30,640.50x = 2,379,927,440.25
5. Step 5: Solve for x
   x = 2,379,927,440.25/30,640.50
6. Step 6: Final answer
   x = 77,672.60