Finding the Third Proportional to 28,731 and 45,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,731 : 45,688.50 = 45,688.50 : x
2. Step 2: Convert to fraction form
   28,731/45,688.50 = 45,688.50/x
3. Step 3: Cross multiply
   28,731x = 45,688.50 × 45,688.50
4. Step 4: Simplify right side
   28,731x = 2,087,439,032.25
5. Step 5: Solve for x
   x = 2,087,439,032.25/28,731
6. Step 6: Final answer
   x = 72,654.59