Finding the Third Proportional to 9,389.67 and 10,878.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.67 : 10,878.05 = 10,878.05 : x
2. Step 2: Convert to fraction form
   9,389.67/10,878.05 = 10,878.05/x
3. Step 3: Cross multiply
   9,389.67x = 10,878.05 × 10,878.05
4. Step 4: Simplify right side
   9,389.67x = 118,331,903.81
5. Step 5: Solve for x
   x = 118,331,903.81/9,389.67
6. Step 6: Final answer
   x = 12,602.35