Finding the Third Proportional to 210,984 and 301,492.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,984 : 301,492.50 = 301,492.50 : x
2. Step 2: Convert to fraction form
   210,984/301,492.50 = 301,492.50/x
3. Step 3: Cross multiply
   210,984x = 301,492.50 × 301,492.50
4. Step 4: Simplify right side
   210,984x = 90,897,727,556.25
5. Step 5: Solve for x
   x = 90,897,727,556.25/210,984
6. Step 6: Final answer
   x = 430,827.59