Finding the Third Proportional to 139,766.75 and 301,663.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,766.75 : 301,663.25 = 301,663.25 : x
2. Step 2: Convert to fraction form
   139,766.75/301,663.25 = 301,663.25/x
3. Step 3: Cross multiply
   139,766.75x = 301,663.25 × 301,663.25
4. Step 4: Simplify right side
   139,766.75x = 91,000,716,400.56
5. Step 5: Solve for x
   x = 91,000,716,400.56/139,766.75
6. Step 6: Final answer
   x = 651,089.88