Finding the Third Proportional to 98,510 and 210,124

Step by Step Solution

1. Step 1: Write the proportion equation
   98,510 : 210,124 = 210,124 : x
2. Step 2: Convert to fraction form
   98,510/210,124 = 210,124/x
3. Step 3: Cross multiply
   98,510x = 210,124 × 210,124
4. Step 4: Simplify right side
   98,510x = 44,152,095,376
5. Step 5: Solve for x
   x = 44,152,095,376/98,510
6. Step 6: Final answer
   x = 448,199.12