Finding the Third Proportional to 63,830.53 and 138,889.69

Step by Step Solution

1. Step 1: Write the proportion equation
   63,830.53 : 138,889.69 = 138,889.69 : x
2. Step 2: Convert to fraction form
   63,830.53/138,889.69 = 138,889.69/x
3. Step 3: Cross multiply
   63,830.53x = 138,889.69 × 138,889.69
4. Step 4: Simplify right side
   63,830.53x = 19,290,345,293.85
5. Step 5: Solve for x
   x = 19,290,345,293.85/63,830.53
6. Step 6: Final answer
   x = 302,211.89