Finding the Third Proportional to 139,525.31 and 302,216.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,525.31 : 302,216.63 = 302,216.63 : x
2. Step 2: Convert to fraction form
   139,525.31/302,216.63 = 302,216.63/x
3. Step 3: Cross multiply
   139,525.31x = 302,216.63 × 302,216.63
4. Step 4: Simplify right side
   139,525.31x = 91,334,888,426.39
5. Step 5: Solve for x
   x = 91,334,888,426.39/139,525.31
6. Step 6: Final answer
   x = 654,611.60