Finding the Third Proportional to 139,000.22 and 305,064.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,000.22 : 305,064.56 = 305,064.56 : x
2. Step 2: Convert to fraction form
   139,000.22/305,064.56 = 305,064.56/x
3. Step 3: Cross multiply
   139,000.22x = 305,064.56 × 305,064.56
4. Step 4: Simplify right side
   139,000.22x = 93,064,387,293.32
5. Step 5: Solve for x
   x = 93,064,387,293.32/139,000.22
6. Step 6: Final answer
   x = 669,526.91