Finding the Third Proportional to 28,971.50 and 61,056.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,971.50 : 61,056.50 = 61,056.50 : x
2. Step 2: Convert to fraction form
   28,971.50/61,056.50 = 61,056.50/x
3. Step 3: Cross multiply
   28,971.50x = 61,056.50 × 61,056.50
4. Step 4: Simplify right side
   28,971.50x = 3,727,896,192.25
5. Step 5: Solve for x
   x = 3,727,896,192.25/28,971.50
6. Step 6: Final answer
   x = 128,674.60