Finding the Third Proportional to 31,490,901 and 47,072,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,490,901 : 47,072,407.50 = 47,072,407.50 : x
2. Step 2: Convert to fraction form
   31,490,901/47,072,407.50 = 47,072,407.50/x
3. Step 3: Cross multiply
   31,490,901x = 47,072,407.50 × 47,072,407.50
4. Step 4: Simplify right side
   31,490,901x = 2,215,811,547,846,056.25
5. Step 5: Solve for x
   x = 2,215,811,547,846,056.25/31,490,901
6. Step 6: Final answer
   x = 70,363,548.75