Finding the Third Proportional to 151,870 and 351,581

Step by Step Solution

1. Step 1: Write the proportion equation
   151,870 : 351,581 = 351,581 : x
2. Step 2: Convert to fraction form
   151,870/351,581 = 351,581/x
3. Step 3: Cross multiply
   151,870x = 351,581 × 351,581
4. Step 4: Simplify right side
   151,870x = 123,609,199,561
5. Step 5: Solve for x
   x = 123,609,199,561/151,870
6. Step 6: Final answer
   x = 813,914.53