Finding the Third Proportional to 392,436 and 847,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,436 : 847,588.50 = 847,588.50 : x
2. Step 2: Convert to fraction form
   392,436/847,588.50 = 847,588.50/x
3. Step 3: Cross multiply
   392,436x = 847,588.50 × 847,588.50
4. Step 4: Simplify right side
   392,436x = 718,406,265,332.25
5. Step 5: Solve for x
   x = 718,406,265,332.25/392,436
6. Step 6: Final answer
   x = 1,830,632.93