Finding the Third Proportional to 291,060 and 434,794.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,060 : 434,794.50 = 434,794.50 : x
2. Step 2: Convert to fraction form
   291,060/434,794.50 = 434,794.50/x
3. Step 3: Cross multiply
   291,060x = 434,794.50 × 434,794.50
4. Step 4: Simplify right side
   291,060x = 189,046,257,230.25
5. Step 5: Solve for x
   x = 189,046,257,230.25/291,060
6. Step 6: Final answer
   x = 649,509.58