Finding the Third Proportional to 67,312.50 and 105,603

Step by Step Solution

1. Step 1: Write the proportion equation
   67,312.50 : 105,603 = 105,603 : x
2. Step 2: Convert to fraction form
   67,312.50/105,603 = 105,603/x
3. Step 3: Cross multiply
   67,312.50x = 105,603 × 105,603
4. Step 4: Simplify right side
   67,312.50x = 11,151,993,609
5. Step 5: Solve for x
   x = 11,151,993,609/67,312.50
6. Step 6: Final answer
   x = 165,674.93