Finding the Third Proportional to 376,659 and 558,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   376,659 : 558,472.50 = 558,472.50 : x
2. Step 2: Convert to fraction form
   376,659/558,472.50 = 558,472.50/x
3. Step 3: Cross multiply
   376,659x = 558,472.50 × 558,472.50
4. Step 4: Simplify right side
   376,659x = 311,891,533,256.25
5. Step 5: Solve for x
   x = 311,891,533,256.25/376,659
6. Step 6: Final answer
   x = 828,047.47