Finding the Third Proportional to 252,253 and 390,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,253 : 390,595.50 = 390,595.50 : x
2. Step 2: Convert to fraction form
   252,253/390,595.50 = 390,595.50/x
3. Step 3: Cross multiply
   252,253x = 390,595.50 × 390,595.50
4. Step 4: Simplify right side
   252,253x = 152,564,844,620.25
5. Step 5: Solve for x
   x = 152,564,844,620.25/252,253
6. Step 6: Final answer
   x = 604,808.84