Finding the Third Proportional to 135,445.50 and 293,490

Step by Step Solution

1. Step 1: Write the proportion equation
   135,445.50 : 293,490 = 293,490 : x
2. Step 2: Convert to fraction form
   135,445.50/293,490 = 293,490/x
3. Step 3: Cross multiply
   135,445.50x = 293,490 × 293,490
4. Step 4: Simplify right side
   135,445.50x = 86,136,380,100
5. Step 5: Solve for x
   x = 86,136,380,100/135,445.50
6. Step 6: Final answer
   x = 635,948.63