Finding the Third Proportional to 245,564 and 528,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,564 : 528,912.50 = 528,912.50 : x
2. Step 2: Convert to fraction form
   245,564/528,912.50 = 528,912.50/x
3. Step 3: Cross multiply
   245,564x = 528,912.50 × 528,912.50
4. Step 4: Simplify right side
   245,564x = 279,748,432,656.25
5. Step 5: Solve for x
   x = 279,748,432,656.25/245,564
6. Step 6: Final answer
   x = 1,139,207.83