Finding the Third Proportional to 105,130 and 243,129

Step by Step Solution

1. Step 1: Write the proportion equation
   105,130 : 243,129 = 243,129 : x
2. Step 2: Convert to fraction form
   105,130/243,129 = 243,129/x
3. Step 3: Cross multiply
   105,130x = 243,129 × 243,129
4. Step 4: Simplify right side
   105,130x = 59,111,710,641
5. Step 5: Solve for x
   x = 59,111,710,641/105,130
6. Step 6: Final answer
   x = 562,272.53