Finding the Third Proportional to 58,545 and 90,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,545 : 90,820.50 = 90,820.50 : x
2. Step 2: Convert to fraction form
   58,545/90,820.50 = 90,820.50/x
3. Step 3: Cross multiply
   58,545x = 90,820.50 × 90,820.50
4. Step 4: Simplify right side
   58,545x = 8,248,363,220.25
5. Step 5: Solve for x
   x = 8,248,363,220.25/58,545
6. Step 6: Final answer
   x = 140,889.29