Finding the Third Proportional to 69,069.50 and 103,178

Step by Step Solution

1. Step 1: Write the proportion equation
   69,069.50 : 103,178 = 103,178 : x
2. Step 2: Convert to fraction form
   69,069.50/103,178 = 103,178/x
3. Step 3: Cross multiply
   69,069.50x = 103,178 × 103,178
4. Step 4: Simplify right side
   69,069.50x = 10,645,699,684
5. Step 5: Solve for x
   x = 10,645,699,684/69,069.50
6. Step 6: Final answer
   x = 154,130.26