Finding the Third Proportional to 393,924 and 611,119.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,924 : 611,119.50 = 611,119.50 : x
2. Step 2: Convert to fraction form
   393,924/611,119.50 = 611,119.50/x
3. Step 3: Cross multiply
   393,924x = 611,119.50 × 611,119.50
4. Step 4: Simplify right side
   393,924x = 373,467,043,280.25
5. Step 5: Solve for x
   x = 373,467,043,280.25/393,924
6. Step 6: Final answer
   x = 948,068.77