Finding the Third Proportional to 284,131.50 and 441,138

Step by Step Solution

1. Step 1: Write the proportion equation
   284,131.50 : 441,138 = 441,138 : x
2. Step 2: Convert to fraction form
   284,131.50/441,138 = 441,138/x
3. Step 3: Cross multiply
   284,131.50x = 441,138 × 441,138
4. Step 4: Simplify right side
   284,131.50x = 194,602,735,044
5. Step 5: Solve for x
   x = 194,602,735,044/284,131.50
6. Step 6: Final answer
   x = 684,903.77