Finding the Third Proportional to 111,402 and 243,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,402 : 243,130.50 = 243,130.50 : x
2. Step 2: Convert to fraction form
   111,402/243,130.50 = 243,130.50/x
3. Step 3: Cross multiply
   111,402x = 243,130.50 × 243,130.50
4. Step 4: Simplify right side
   111,402x = 59,112,440,030.25
5. Step 5: Solve for x
   x = 59,112,440,030.25/111,402
6. Step 6: Final answer
   x = 530,622.79