Finding the Third Proportional to 291,604 and 437,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,604 : 437,406.50 = 437,406.50 : x
2. Step 2: Convert to fraction form
   291,604/437,406.50 = 437,406.50/x
3. Step 3: Cross multiply
   291,604x = 437,406.50 × 437,406.50
4. Step 4: Simplify right side
   291,604x = 191,324,446,242.25
5. Step 5: Solve for x
   x = 191,324,446,242.25/291,604
6. Step 6: Final answer
   x = 656,110.50