Finding the Third Proportional to 525,213 and 787,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   525,213 : 787,621.50 = 787,621.50 : x
2. Step 2: Convert to fraction form
   525,213/787,621.50 = 787,621.50/x
3. Step 3: Cross multiply
   525,213x = 787,621.50 × 787,621.50
4. Step 4: Simplify right side
   525,213x = 620,347,627,262.25
5. Step 5: Solve for x
   x = 620,347,627,262.25/525,213
6. Step 6: Final answer
   x = 1,181,135.32