Finding the Third Proportional to 293,136.89 and 437,978.81

Step by Step Solution

1. Step 1: Write the proportion equation
   293,136.89 : 437,978.81 = 437,978.81 : x
2. Step 2: Convert to fraction form
   293,136.89/437,978.81 = 437,978.81/x
3. Step 3: Cross multiply
   293,136.89x = 437,978.81 × 437,978.81
4. Step 4: Simplify right side
   293,136.89x = 191,825,440,198.91
5. Step 5: Solve for x
   x = 191,825,440,198.91/293,136.89
6. Step 6: Final answer
   x = 654,388.60