Finding the Third Proportional to 77,427 and 109,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,427 : 109,030.50 = 109,030.50 : x
2. Step 2: Convert to fraction form
   77,427/109,030.50 = 109,030.50/x
3. Step 3: Cross multiply
   77,427x = 109,030.50 × 109,030.50
4. Step 4: Simplify right side
   77,427x = 11,887,649,930.25
5. Step 5: Solve for x
   x = 11,887,649,930.25/77,427
6. Step 6: Final answer
   x = 153,533.65