Finding the Third Proportional to 139,141 and 210,003

Step by Step Solution

1. Step 1: Write the proportion equation
   139,141 : 210,003 = 210,003 : x
2. Step 2: Convert to fraction form
   139,141/210,003 = 210,003/x
3. Step 3: Cross multiply
   139,141x = 210,003 × 210,003
4. Step 4: Simplify right side
   139,141x = 44,101,260,009
5. Step 5: Solve for x
   x = 44,101,260,009/139,141
6. Step 6: Final answer
   x = 316,953.74