Finding the Third Proportional to 284,139 and 441,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   284,139 : 441,148.50 = 441,148.50 : x
2. Step 2: Convert to fraction form
   284,139/441,148.50 = 441,148.50/x
3. Step 3: Cross multiply
   284,139x = 441,148.50 × 441,148.50
4. Step 4: Simplify right side
   284,139x = 194,611,999,052.25
5. Step 5: Solve for x
   x = 194,611,999,052.25/284,139
6. Step 6: Final answer
   x = 684,918.29