Finding the Third Proportional to 90,052.31 and 130,428.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90,052.31 : 130,428.56 = 130,428.56 : x
2. Step 2: Convert to fraction form
   90,052.31/130,428.56 = 130,428.56/x
3. Step 3: Cross multiply
   90,052.31x = 130,428.56 × 130,428.56
4. Step 4: Simplify right side
   90,052.31x = 17,011,609,915.82
5. Step 5: Solve for x
   x = 17,011,609,915.82/90,052.31
6. Step 6: Final answer
   x = 188,908.09