Finding the Third Proportional to 69,618.38 and 142,925.63

Step by Step Solution

1. Step 1: Write the proportion equation
   69,618.38 : 142,925.63 = 142,925.63 : x
2. Step 2: Convert to fraction form
   69,618.38/142,925.63 = 142,925.63/x
3. Step 3: Cross multiply
   69,618.38x = 142,925.63 × 142,925.63
4. Step 4: Simplify right side
   69,618.38x = 20,427,734,281.64
5. Step 5: Solve for x
   x = 20,427,734,281.64/69,618.38
6. Step 6: Final answer
   x = 293,424.46