Finding the Third Proportional to 355,656 and 777,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,656 : 777,700.50 = 777,700.50 : x
2. Step 2: Convert to fraction form
   355,656/777,700.50 = 777,700.50/x
3. Step 3: Cross multiply
   355,656x = 777,700.50 × 777,700.50
4. Step 4: Simplify right side
   355,656x = 604,818,067,700.25
5. Step 5: Solve for x
   x = 604,818,067,700.25/355,656
6. Step 6: Final answer
   x = 1,700,570.40