Finding the Third Proportional to 208,485.56 and 435,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,485.56 : 435,064.50 = 435,064.50 : x
2. Step 2: Convert to fraction form
   208,485.56/435,064.50 = 435,064.50/x
3. Step 3: Cross multiply
   208,485.56x = 435,064.50 × 435,064.50
4. Step 4: Simplify right side
   208,485.56x = 189,281,119,160.25
5. Step 5: Solve for x
   x = 189,281,119,160.25/208,485.56
6. Step 6: Final answer
   x = 907,885.98