Finding the Third Proportional to 340,611 and 515,632.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,611 : 515,632.50 = 515,632.50 : x
2. Step 2: Convert to fraction form
   340,611/515,632.50 = 515,632.50/x
3. Step 3: Cross multiply
   340,611x = 515,632.50 × 515,632.50
4. Step 4: Simplify right side
   340,611x = 265,876,875,056.25
5. Step 5: Solve for x
   x = 265,876,875,056.25/340,611
6. Step 6: Final answer
   x = 780,588.05