Finding the Third Proportional to 405,282 and 938,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,282 : 938,239.50 = 938,239.50 : x
2. Step 2: Convert to fraction form
   405,282/938,239.50 = 938,239.50/x
3. Step 3: Cross multiply
   405,282x = 938,239.50 × 938,239.50
4. Step 4: Simplify right side
   405,282x = 880,293,359,360.25
5. Step 5: Solve for x
   x = 880,293,359,360.25/405,282
6. Step 6: Final answer
   x = 2,172,051.46