Finding the Third Proportional to 28,683 and 61,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,683 : 61,978.50 = 61,978.50 : x
2. Step 2: Convert to fraction form
   28,683/61,978.50 = 61,978.50/x
3. Step 3: Cross multiply
   28,683x = 61,978.50 × 61,978.50
4. Step 4: Simplify right side
   28,683x = 3,841,334,462.25
5. Step 5: Solve for x
   x = 3,841,334,462.25/28,683
6. Step 6: Final answer
   x = 133,923.73