Finding the Third Proportional to 28,115 and 43,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,115 : 43,516.50 = 43,516.50 : x
2. Step 2: Convert to fraction form
   28,115/43,516.50 = 43,516.50/x
3. Step 3: Cross multiply
   28,115x = 43,516.50 × 43,516.50
4. Step 4: Simplify right side
   28,115x = 1,893,685,772.25
5. Step 5: Solve for x
   x = 1,893,685,772.25/28,115
6. Step 6: Final answer
   x = 67,355.00