Finding the Third Proportional to 13,140 and 30,937.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,140 : 30,937.50 = 30,937.50 : x
2. Step 2: Convert to fraction form
   13,140/30,937.50 = 30,937.50/x
3. Step 3: Cross multiply
   13,140x = 30,937.50 × 30,937.50
4. Step 4: Simplify right side
   13,140x = 957,128,906.25
5. Step 5: Solve for x
   x = 957,128,906.25/13,140
6. Step 6: Final answer
   x = 72,840.86