Finding the Third Proportional to 342,117 and 526,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,117 : 526,621.50 = 526,621.50 : x
2. Step 2: Convert to fraction form
   342,117/526,621.50 = 526,621.50/x
3. Step 3: Cross multiply
   342,117x = 526,621.50 × 526,621.50
4. Step 4: Simplify right side
   342,117x = 277,330,204,262.25
5. Step 5: Solve for x
   x = 277,330,204,262.25/342,117
6. Step 6: Final answer
   x = 810,629.71