Finding the Third Proportional to 78,300 and 104,886

Step by Step Solution

1. Step 1: Write the proportion equation
   78,300 : 104,886 = 104,886 : x
2. Step 2: Convert to fraction form
   78,300/104,886 = 104,886/x
3. Step 3: Cross multiply
   78,300x = 104,886 × 104,886
4. Step 4: Simplify right side
   78,300x = 11,001,072,996
5. Step 5: Solve for x
   x = 11,001,072,996/78,300
6. Step 6: Final answer
   x = 140,499.02