Finding the Third Proportional to 214,470 and 423,556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   214,470 : 423,556.50 = 423,556.50 : x
2. Step 2: Convert to fraction form
   214,470/423,556.50 = 423,556.50/x
3. Step 3: Cross multiply
   214,470x = 423,556.50 × 423,556.50
4. Step 4: Simplify right side
   214,470x = 179,400,108,692.25
5. Step 5: Solve for x
   x = 179,400,108,692.25/214,470
6. Step 6: Final answer
   x = 836,481.13