Finding the Third Proportional to 520,088 and 776,700

Step by Step Solution

1. Step 1: Write the proportion equation
   520,088 : 776,700 = 776,700 : x
2. Step 2: Convert to fraction form
   520,088/776,700 = 776,700/x
3. Step 3: Cross multiply
   520,088x = 776,700 × 776,700
4. Step 4: Simplify right side
   520,088x = 603,262,890,000
5. Step 5: Solve for x
   x = 603,262,890,000/520,088
6. Step 6: Final answer
   x = 1,159,924.65