Finding the Third Proportional to 361,209 and 572,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,209 : 572,431.50 = 572,431.50 : x
2. Step 2: Convert to fraction form
   361,209/572,431.50 = 572,431.50/x
3. Step 3: Cross multiply
   361,209x = 572,431.50 × 572,431.50
4. Step 4: Simplify right side
   361,209x = 327,677,822,192.25
5. Step 5: Solve for x
   x = 327,677,822,192.25/361,209
6. Step 6: Final answer
   x = 907,169.59