Finding the Third Proportional to 529,626 and 680,026.50

Step by Step Solution

1. Step 1: Write the proportion equation
   529,626 : 680,026.50 = 680,026.50 : x
2. Step 2: Convert to fraction form
   529,626/680,026.50 = 680,026.50/x
3. Step 3: Cross multiply
   529,626x = 680,026.50 × 680,026.50
4. Step 4: Simplify right side
   529,626x = 462,436,040,702.25
5. Step 5: Solve for x
   x = 462,436,040,702.25/529,626
6. Step 6: Final answer
   x = 873,136.97