Finding the Third Proportional to 218,346 and 477,423.75

Step by Step Solution

1. Step 1: Write the proportion equation
   218,346 : 477,423.75 = 477,423.75 : x
2. Step 2: Convert to fraction form
   218,346/477,423.75 = 477,423.75/x
3. Step 3: Cross multiply
   218,346x = 477,423.75 × 477,423.75
4. Step 4: Simplify right side
   218,346x = 227,933,437,064.06
5. Step 5: Solve for x
   x = 227,933,437,064.06/218,346
6. Step 6: Final answer
   x = 1,043,909.38