Finding the Third Proportional to 525,111 and 814,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   525,111 : 814,666.50 = 814,666.50 : x
2. Step 2: Convert to fraction form
   525,111/814,666.50 = 814,666.50/x
3. Step 3: Cross multiply
   525,111x = 814,666.50 × 814,666.50
4. Step 4: Simplify right side
   525,111x = 663,681,506,222.25
5. Step 5: Solve for x
   x = 663,681,506,222.25/525,111
6. Step 6: Final answer
   x = 1,263,888.03