Finding the Third Proportional to 111,346 and 243,140

Step by Step Solution

1. Step 1: Write the proportion equation
   111,346 : 243,140 = 243,140 : x
2. Step 2: Convert to fraction form
   111,346/243,140 = 243,140/x
3. Step 3: Cross multiply
   111,346x = 243,140 × 243,140
4. Step 4: Simplify right side
   111,346x = 59,117,059,600
5. Step 5: Solve for x
   x = 59,117,059,600/111,346
6. Step 6: Final answer
   x = 530,931.15