Finding the Third Proportional to 291,069 and 434,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,069 : 434,812.50 = 434,812.50 : x
2. Step 2: Convert to fraction form
   291,069/434,812.50 = 434,812.50/x
3. Step 3: Cross multiply
   291,069x = 434,812.50 × 434,812.50
4. Step 4: Simplify right side
   291,069x = 189,061,910,156.25
5. Step 5: Solve for x
   x = 189,061,910,156.25/291,069
6. Step 6: Final answer
   x = 649,543.27